Is there a file size or count limit?

There is no fixed limit because merging happens entirely in your browser. The only practical limit is your device memory; most laptops handle dozens of large PDFs without issue.

Are my PDFs uploaded to a server?

No. All processing runs locally using JavaScript. Your files never leave your device, which makes the tool safe for confidential documents.

Can I change the order of pages before merging?

Yes. Use the Up/Down arrows next to each file to reorder them. The final PDF follows the order shown in the list.

Merge PDF – Combine Multiple PDF Files Into One Online

Merge PDF

Combine multiple PDF files into one. Reorder before merging — runs in your browser.

Add two or more PDF files to begin. Pages are kept in the order shown below.

Merge PDF Files Online

The Merge PDF tool joins two or more PDF documents into a single file. Use it to combine chapters of a report, stitch invoices together, or assemble scanned pages into one searchable archive.

How to merge PDFs

Click Add PDFs and select two or more files.
Reorder them using the up and down arrows — the final document follows the visible order.
Click Merge & Download. The combined PDF saves directly to your device.

Privacy first

Every byte stays on your machine. The merge happens in your browser using WebAssembly-grade PDF parsing, so confidential contracts, payslips, and medical records never travel over the network.

When merging is useful

Submitting a single attachment to portals that reject multiple files.
Bundling supporting documents for visa, loan, or tax applications.
Compiling weekly reports from several sources before sharing.

The Merge PDF tool joins two or more PDF documents into a single file. Use it to combine chapters of a report, stitch invoices together, or assemble scanned pages into one searchable archive.

How to merge PDFs

Click Add PDFs and select two or more files.
Reorder them using the up and down arrows — the final document follows the visible order.
Click Merge & Download. The combined PDF saves directly to your device.

Privacy first

Every byte stays on your machine. The merge happens in your browser using WebAssembly-grade PDF parsing, so confidential contracts, payslips, and medical records never travel over the network.

When merging is useful

Submitting a single attachment to portals that reject multiple files.
Bundling supporting documents for visa, loan, or tax applications.
Compiling weekly reports from several sources before sharing.